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Simulation and detection of dirac fermions with cold atoms in an optical lattice



Simulation and detection of dirac fermions with cold atoms in an optical lattice



Physical Review Letters 98(26): 260402



We propose an experimental scheme to simulate and observe relativistic Dirac fermions with cold atoms in a hexagonal optical lattice. By controlling the lattice anisotropy, one can realize both massive and massless Dirac fermions and observe the phase transition between them. Through explicit calculations, we show that both the Bragg spectroscopy and the atomic density profile in a trap can be used to demonstrate the Dirac fermions and the associated phase transition.

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Accession: 055783858

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PMID: 17678070

DOI: 10.1103/PhysRevLett.98.260402


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